Image Collection: Sexually Transmitted Diseases (STDs)

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4. Picture of Syphilis

Picture of Syphilis
Science Source/Photo Researchers, Fitzpatrick's Color Atlas & Synopsis of Clinical Dermatology

Syphilis: A sexually transmitted disease caused by Treponema pallidum, a microscopic organism called a spirochete. This worm-like, spiral-shaped organism infects people by burrowing into the moist mucous membranes of the mouth or genitals. From there, the spirochete produces a non-painful ulcer known as a chancre.

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  Facts About Sexually Transmitted Diseases

Image Source: Science Source/Photo Researchers, Fitzpatrick's Color Atlas & Synopsis of Clinical Dermatology

Text: MedTerms™ Medical Dictionary by MedicineNet, Inc.

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